C# - HttpWebResponse.StatusCode Not Trapping 500 Errors
Dec 6, 2010
Does a HttpWebResponse.StatusCode detect Asp.Net errors? Mainly a yellow screen of death? Some Background: I am working on a simple c# console app that will test servers and services to make sure they are still functioning properly. I assumed since the HttpStatusCodes are enumerated with OK, Moved, InteralServerError, etc... that I could simply do the following.
WebRequest request = WebRequest.Create(url);
request.Timeout = 10000;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (response == null || response.StatusCode != HttpStatusCode.OK)
{
// SERVER IS OK
return false;
}
else
{
// SERVER HAS SOME PROBLEMS
return true;
}
I found out this morning however that this doesn't work. An ASP.Net application crashed showing a Yellow Screen Of Death and my application didn't seem to mind because the response.StatusCode equaled HttpStatusCode.OK. What am I missing?
i want to redirect to the custom error pages accoarding to the errors. i thionk we can do it by using statuscode of error. how to create status code to our errors?
This works fine locally. A 404 throws a 404. On the shared hosting it throws up the standard server 404 page unless I specifically set 404 to point to /Error/NotFound. That's fine. Now it will show the custom 404 page except the response status code is 200. So if I try to throw Response.StatusCode = 404; in my NotFound action in ErrorController like this:
Csharp Code:
[code]....
the server throws a status code 500 Internal Server Error but my GeneralError page doesn't show, just a blank white page with no source.
I've tried many different combinations but I can't seem to find how to make it show my custom 404 page along with a 404 response.
I have a page (generic handler) on which I want to return the status code 500 to the client to indicate that something is wrong. I do it like this:
Response.StatusCode = 500; Response.StatusDescription = "Internal Server Error";
And at the same time I render a friendly message telling the user that something went wrong. But instead of seing my message, I get the default IIS message saying something like this:
Server Error 500 - Internal server error. There is a problem with the resource you are looking for, and it cannot be displayed.
And if I go in to IIS and remove the error page for 500, I get this message:
The page cannot be displayed because an internal server error has occurred.
It works as intended in IIS6, but not in IIS7. What should I do to get it working in IIS7?
I have a usercontrol (ascx) with a DropDownList placed on a MasterPage. It has AutoPostBack=true. I created a SelectedIndexChanged event for the dropdown on the usercontrol, but it does not fire when seleted item changes. The PostBack fires and both current page as well as MasterPage are reloaded but the SelectedIndexChanged is not fired. How can this event be trapped?
I have a long poll HTTP request using ASP.NET 4, MVC 2 and AsyncController. If a user closes their browser and kills the HTTP connection without the request completing, I'd like to know about it and completely clean up after them. If I don't, the open and incomplete requests just sit there and eventually IIS stops accepting new requests.
You can simulate my long running HTTP request by making a normal ASP.NET application with a page that has a Thread.Sleep. Even if you close the browser, the request carries on as if it hasn't.
There is a property called Response.IsClientConnected that gets switched to false if the client disconnects, and I can poll this to achieve the desired effect but it's not very clean and I'd like to avoid polling. Is there a way of getting notified when this happens rather than having to poll this property?
How can I configure ASP.NET/IIS to show custom error pages (i.e. a nice friendly error page), but to still return a 404/500 status code so that google does not try to index the page? I have tried setting the Response.StatusCode to 404, but then the nice error page does not show anymore.
I have a C# web forms ASP.NET 4.0 web application that uses Routing for URLs for some reason custom errors defined in the system.web section of my web.config is entirely ignored and it will fall back the IIS errors.
This gets entirely ignored
[code]....
This would be a minor inconvenience except that by the fact it falls back to IIS native instead of my application it completely circumvents Elmah logging my 404 exceptions correctly.
I connect to a web address using HttpWebRequest object (http://www.website.com/page1.aspx), this page should redirect me to another page (http://www.website.com/page2.aspx). What I want to do are two things:
Redirect (http://www.website.com/page1.aspx) to (http://www.website.com/page2.aspx) by HttpWebRequest obeject.Get the new URL (http://www.website.com/page2.aspx) from HttpWebResponse.
I tried to post data to client HTTPPost URL, as per the client specification I need to post the data using "Post" method and I used the same. But it throws an error "The remote server returned an error: (500)Internal Server Error". in the HTTpWebResponse.My post URL does not have any specific page like http://abc.com/post/post.aspx. the actual URL looks like "http://abc.com/post", Can we post the lead without any specific page like I said in the above URl?
I'm implementing PayPal PDT (Payment Data Transfer) for payment confirmations in ASP.NET.'m going to receive a url post from PayPal with query string parameters. Then I need to send back the form at the bottom of the page.I'd like to implement the form at the bottom as a non-visual HttpWebRequest.
I'm trying to read a response from an encoded apache server, the post works fine but i'm ripping my hair out over the response, it was working yesterday and they've turned off compression now so there is no contenttype encoding getting passed back.I'm using fiddler and getting this response back for the response type below; i'm basically trying to read a XML into a XmlDocument from the responded string and all i'm geetting back is encoded characters no matter what i do, so can someone please give me a hand with this before i make myself bald before 30.
I need to display pdf using my web application each time user clicks on image icon.On clicking the image, I will call another web application(imageUrl) which will open up the pdf.Please find the code below:
I have a file, a.pdf, stored on a SharePoint server behind Windows authentication. I want to make a.pdf available through another Web app with forms authentication. Basically, link is clicked and up pops the open / save as dialog for the pdf (or other document file) I've set up my HTTPWebRequest and passed credentials, getting my data into a stream (file.GetResponseStream).
I've tried converting the stream to a byte array and then using response.write or response.output.write with no luck (stream not seekable) I've tried using a streamreader and doing a response.write(streamreader.readtoend()) and response.write(memorystream.toarray(),0,memorystream.toarray().length) with no luck (the message received from the server could not be parsed).
I need to check whether the request will return a 500 Server Internal Error or not (so getting the error is expected). I'm doing this:
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; request.Method = "GET"; HttpWebResponse response = request.GetResponse() as HttpWebResponse; if (response.StatusCode == HttpStatusCode.OK) return true; else return false;
But when I get the 500 Internal Server Error, a WebException is thrown, and I don't want to depend on it to control the application flow - how can this be done?
My problem is that although the response length is correct at around 21MB, the stream is returned far too quickly (pretty much instant) and the byte array ends up being filled with only a small number of bytes. The response is clearly not returning the full file so what am I doing wrong?
When I build my program, if there's one error that prevents it from running, instead of just getting the one error I'll get around 50 additional errors in addition to the real one such as:
Error 27 Validation (XHTML 1.0 Transitional): This name contains uppercase characters, which is not allowed.
I am trying to publish an MVC 2 site in Visual Studio 2010 on Windows Server 2008 R2.
As I read to do, I expand References and select: - System.Web.MVC - System.Web.Routing - System.Web.Abstractions and set Copy Local to True.
Then I right click the MVC Web Project and select Publish. I select Publish Method of File System. This publishes to the local file directory I specified in a compiled down version. My first question is this: The MVC specific references whose Copy Local I set to true do not show up in the published bin file like I thought they were supposed to do. Now when I copy the files over to production it does not work.
For the top level [URL] I get: 403 - Forbidden: Access is denied. You do not have permission to view this directory or page using the credentials that you supplied.
For [URL] I get: 404 - File or directory not found. The resource you are looking for might have been removed, had its name changed, or is temporarily unavailable.
For [URL] I get: 500 - Internal server error. There is a problem with the resource you are looking for, and it cannot be displayed. Can someone point me to the right way to do this?
